you answered your own question
The Roman empire being gigantic at one point covering most of Europe, North Africa, and some of Asia was impossible to rule. The outer most towns and cities we're not really being ruled at all. so the Roman empire probably separated to make it easier to rule all of the empire at once.
Some mining camps started to grow into towns or cities as more people started pooling into the mining camps the population started expanding and also precious metals like gold was often found.
Explanation:
The population explosion required more building as camps could no longer accommodate such huge numbers.
Mining also led to employment, a boom in business and prospects of a healthy income on a regular basis. The finding of gold further led to wealthy business prospects.
As the camps started changing into towns and cities with more settlements facilities like railroads, schools and hospitals along with markets were also built.
B maybe? It was an irony and the Enlightenment thinkers were trying to come up with new ideas and the irony was that books containing new ideas were banned.
I think it’s Morning is the best time of day